Step-by-step explanation:
By binomial theorem,
T(r+1) = nCr * a^(r+1) * b^r
Term 4 = 7C3 * (2x)^4 * (-5y)^3 = 35 * (16x^4) * (-125y^3) = -70000x^4y^3.
Answer:
b = c/a
Step-by-step explanation:
Answer: ME
Step-by-step explanation:
B. .33 .3 .275 .25 yup, just gotta get over 20 characters